Out of the 3 I would say GB or TSPP. TWD while having great code has terrible theme integration in my opinion. The actors make the show and they are no where to be found in the games rules, audio, or its artwork and Pinball Browser cannot help with 2 of the 3 (rules and artwork).

GB is one of the coolest looking pins I've seen in years. The artwork is incredible and the code seems fairly good. The game also features original audio from the movies main actors and custom callouts by Ernie Hudson. The code could certainty use more work which is why I'm now leaning towards the pro versus the premium mode. The premium model while incredible looking and having some slick toys lacks the proper code to take advantage of the extra movement of the premium slimer mech and there are only a handful of animations for the Ecto Goggles.

TSPP is a classic with an incredibly deep ruleset by Keith Johnson. Can't go wrong there.